পদ্ধতির তুলনা করুন
নির্বাচিত পদ্ধতিগুলো পাশাপাশি পর্যালোচনা করুন; যে সারিগুলোয় পার্থক্য আছে সেগুলো চিহ্নিত করা হয়।
| প্রাগম্যাটিক ফেজ II ক্লিনিক্যাল ট্রায়াল× | দ্বিতীয় পর্যায়ের ক্লিনিক্যাল ট্রায়াল× | |
|---|---|---|
| ক্ষেত্র | মহামারীবিদ্যা | মহামারীবিদ্যা |
| পরিবার | Process / pipeline | Process / pipeline |
| উদ্ভবের বছর≠ | Pragmatic framework: 1967; Phase II application: 1990s–2000s | 1960s–1970s (formalised in US federal drug regulation) |
| প্রবর্তক≠ | Conceptual basis: Daniel Schwartz & Joseph Lellouch (pragmatic vs. explanatory distinction, 1967); applied to Phase II context by drug developers and trialists from the 1990s onward | U.S. Food and Drug Administration / ICH E8 guidelines (institutionalised framework) |
| ধরন≠ | Interventional study design | Interventional clinical study design |
| মৌলিক উৎস≠ | Schwartz, D., & Lellouch, J. (1967). Explanatory and pragmatic attitudes in therapeutical trials. Journal of Chronic Diseases, 20(8), 637–648. DOI ↗ | Friedman, L. M., Furberg, C. D., DeMets, D. L., Reboussin, D. M., & Granger, C. B. (2015). Fundamentals of Clinical Trials (5th ed.). Springer. ISBN: 978-3319185392 |
| অপর নাম | pragmatic Phase II trial, real-world Phase II trial, Phase II pragmatic RCT, Phase IIb pragmatic trial | Phase 2 trial, Phase II study, early efficacy trial, proof-of-concept trial |
| সম্পর্কিত | 6 | 6 |
| সারসংক্ষেপ≠ | A pragmatic Phase II clinical trial is an early-to-mid-stage interventional study that evaluates a new treatment's preliminary efficacy and safety under conditions that approximate real-world clinical practice rather than tightly controlled experimental settings. It sits between pure explanatory Phase II trials and large pragmatic Phase III confirmatory trials, prioritising practical feasibility and clinical relevance while still generating the signal needed to justify further development. | A Phase II clinical trial is the second stage in the drug or intervention development pipeline, conducted after Phase I safety testing. Its primary goal is to assess whether the intervention shows preliminary efficacy signals in a relevant patient population at the dose established in Phase I, while continuing to characterise the safety and tolerability profile. Phase II trials are generally smaller than Phase III confirmatory trials and serve as critical go/no-go decision points before large-scale investment. |
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